When did Big Brother Season 17 Episode 21 air?
Big Brother Season 17 Episode 21 aired on August 9, 2015.


Expect the unexpected.
American version of the reality game show which follows a group of HouseGuests living together 24 hours a day in the "Big Brother" house, isolated from the outside world but under constant surveillance with no privacy for three months.

Tonight, who will claim the HoH and which two houseguests will be nominated? Plus, see the shocking fight that happened right before the eviction.
Direct answers for episode-level questions and details.
Big Brother Season 17 Episode 21 aired on August 9, 2015.
This episode runs for approximately 45 minutes.
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